#3, #5, #9 VIX-BIT - 5/64" , 7/64" , 9/64" Self-Centering Hinge Bit with 1/4" Hex ShankMfr #: 19163 Bit sizes 9 64", 7 64", and 5 64" Self centering function of drill bit for precise positioning and drilling without walking around 1 4" hex shank (6. 35mm), fast, one handed load and release of bits Side hole on drill bit cylinder cover supports fast remove of sawdust with no jam Handy and precise drilling of cabinet and door hinges pilot holes Includes free replacement bit for each size Allen wrench included